What else could be wrong with my 1998 GMC Sierra 4.3 fuel system?

Question

We have replaced the fuel pump the fuel filter and have discovered that the gas is making it at least to the intake.

Answer 1

check fuses i no its a stupid answer but u wouldnt believe how manny are towed to the shop and all they had to do is check the fuses

Answer 2

I'm assuming that your truck won't start? You could have an electrical problem having to do with your fuel injectors, or bad fuel injectors themselves. It could be a fault in the ignition system and not letting the plugs get any spark,  badly fouled plugs themselves or possibly timing that has been knocked way off. The worst case would be major problems in the valve train not allowing the valves to open (possibly a problem with the timing chain or chain sprockets).  Many things could be going on there.

Is your check engine light on? If so, get the codes pulled.